/*-
 * Copyright (c) 2011 Ondrej Fischer <ondrej.fischer@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef EXPRESS_REPOSITORY_HPP
#define EXPRESS_REPOSITORY_HPP


#include "job.hpp"
#include <string>
#include <map>


using namespace std;
//using namespace __gnu_cxx;

namespace express {


    /**
     * Class Repository
     * 
     * This class impements a global repository of jobs to make sure, that
     * there is no job duplicated.
     */
    class Repository {


        /**
         * Jobs are stored in a hash map
         */
        map<string, Job> repository;
        
        /**
         * Jobs are created using a job descriptor instance. It is an injected
         * factory pattern.
         */
        Job::Description& description;
        
    public:

        /**
         * Method to create a job if it doesn't exist yet and return it or
         * return the existing job.
         */
        Job& get(string id) {
            if(0 == repository.count(id)) repository[id] = description.create(id);
            return repository[id];
        }


    };


}

#endif //EXPRESS_REPOSITORY_HPP
